EP 2668316 A2 20131204 - ELECTROCHEMICAL CONVERSION OF ALKALI SULFATE INTO USEFUL CHEMICAL PRODUCTS
Title (en)
ELECTROCHEMICAL CONVERSION OF ALKALI SULFATE INTO USEFUL CHEMICAL PRODUCTS
Title (de)
ELEKTROCHEMISCHE UMWANDLUNG VON ALKALISULFAT IN NÜTZLICHE CHEMISCHER PRODUKTE
Title (fr)
CONVERSION ÉLECTROCHIMIQUE DE SULFATE D'ALCALI EN PRODUITS CHIMIQUES UTILES
Publication
Application
Priority
- US 201161436979 P 20110127
- US 2012023044 W 20120127
Abstract (en)
[origin: WO2012103529A2] Electrochemical processes to convert alkali sulfates into useful chemical products, such as syngas, alkali hydroxide, and sulfur are disclosed. An alkali sulfate is reacted with carbon to form carbon monoxide and alkali sulfide. In one embodiment, the alkali sulfide is dissolved in water and subjected to electrochemical reaction to form alkali hydroxide, hydrogen, and sulfur. In another embodiment, the alkali sulfide is reacted with iodine to form alkali iodide sulfur in a non-aqueous solvent, such as methyl alcohol. The alkali iodide is electrochemically reacted to form alkali hydroxide, hydrogen, and iodine. The iodine may be recycled to react with additional alkali sulfide. The hydrogen and carbon monoxide from both embodiments may be combined to form syngas. The alkali hydroxide from both embodiments may be recovered as a useful industrial chemical.
IPC 8 full level
C25B 1/20 (2006.01); C01B 17/02 (2006.01); C01B 32/40 (2017.01); C01D 1/04 (2006.01); C10L 3/00 (2006.01); C25B 1/00 (2006.01)
CPC (source: EP US)
C25B 1/00 (2013.01 - EP US); C25B 1/02 (2013.01 - EP US); C25B 1/20 (2013.01 - EP US)
Citation (search report)
See references of WO 2012103529A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012103529 A2 20120802; WO 2012103529 A3 20121213; EP 2668316 A2 20131204; US 2012273365 A1 20121101; US 8764965 B2 20140701
DOCDB simple family (application)
US 2012023044 W 20120127; EP 12739896 A 20120127; US 201213360653 A 20120127